Porto Sunshine Hours by Month

To truly understand a climate, we must look at its sunshine. This page shows the total number of hours of direct sunlight per month and the average hours per day in Porto, Norte Region, Portugal. The figures are based on a 30-year period (1990–2020) to provide a reliable average.

Monthly hours of sunshine

Seasonal sunshine in Porto varies. It peaks at 307 hours in July and drops to 122 hours in January. The total annual amount of sun is 2465 hours.

Daily hours of sunshine

This means the city can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.2 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 4.1 hours of sunlight per day.

Average percent of sunshine

On average the sun shines 73% of the time during the day in August, the highest percentage of any month. December has the lowest percentage at 46%.

Porto enjoys an average of 2465 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

Athens, Greece, enjoys 2769 hours of sunshine each year, making it one of the sunniest destinations in the Mediterranean region.

In contrast, Juneau, Alaska, receives only about 1523 hours of sunshine per year and is known for its very short days in winter and frequently overcast conditions.

In Shanghai, China, the annual average sunshine is 1780 hours, with cloudier weather in summer.

Adelaide, Australia, enjoys 2770 hours of sunshine annually, with long, sunny summers.

November, Porto’s wettest month, receives 27 mm (1.1 in) of rainfall and has a maximum daytime temperature of 17°C (63°F). During the driest month July you can expect a temperature of 25°C (77°F).

For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our Porto Precipitation page.